.label-0 {
  font-size: 2em;
}

.label-1 {
  font-size: 1.5em;
  fill: #111;
}

.label-2 {
  font-size: 1em;
  fill: #444;
}

.label-3 {
  font-size: .9em;
  fill: #888;
}

.label-4 {
  font-size: .8em;
  fill: #aaa;
}

.link-0 {
  stroke: #000;
  stroke-width: 2px
}

.link-1 {
  stroke: #333;
  stroke-width: 1px
}

.link-2, .link-3, .link-4 {
  stroke: #666;
  stroke-width: .5px;
}
